URGENT Ejercicios de Descenso Crioscopico

1-Calcular el descenso crioscópico de una solución de ClNa 0,5 molal sabiendo que Kc: 1,87ºC/m.

2-Calcular el punto de congelación de una sc 2 m de glucosa en agua. TºCagua= 0ºC, Kc= 1,86º/m.

3-Calcular el punto de congelación de una sc compuesta por 86g de glucosa (C6H12O6) y 500 gs de agua. Kc=1,86ºC/m.

4-Calcular el descenso crioscopico de una sc de anticongelante 10%m/msv disuelto en agua (C2H4(OH)2).

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.